borrow of moved value trying to supply key and value

[brianmay]

In my code I want to be able to do:

rsx! {
    ul {
        for item in items.iter() {
            Item {
               key: item.id,
               item: item,
            }
        }
    }
}

In debug mode this works. I think that is because "key" is not used in debug mode.

In release mode I get the error that the item in the "item: " line was used after being moved in the "key:" line.

I can fix this by changing the second item to item.clone(). But this seems silly to clone the entire object, when I just need to copy the id value.

Is there a better solution?

So far everything I have tried has had problems, or is excessively verbose.

For example, this will work, but now I need 2 additional indent levels. Plus I get a warning in debug mode that id is defined but not used.

rsx! {
    ul {
        for item in items.iter() {
            {
              let id = item.id;
              rsx!{
                 Item {
                   key: id,
                   item: item,
                }
              }
            }
        }
    }
}

[ealmloff]

That sounds like this bug: #3737

For now, pulling the id binding into a separate line is the best zero cost solution